How to solve 12 1/2 - (-4 1/2)

A colony of 900,000 bacteria doubles in size every 85 hours. What will the population be 255 hours from now? bacteria

The standard deviation for a set of data is 5.5. The mean is 265. What is the margin of error?

Raffle tickets are being sold for a fundraiser. The function al n) relates the amount of money raised to the number of tickets sold, n. It takes as input the number of tickets sold and returns as output the amount of money raised.

Least common multiple of 8, 12 and 30

Which of the following indicates that the roots of a quadratic are irrational a) discriminant is zero b) discriminant is negative c) discriminant is rational d) discriminant is prime

When does the price of an item decrease

3*21/4 which expression is equal to that fraction

Find the angles of a triangle whose two base angles are equal and whose third angle is 10° less than three times the base angle.

Which situation results in a final value of zero? a. The temperature after a decrease of 5 degrees from a temperature of - 5 degrees. b. The height of an airplane after taking off from ground level and rising 1,000 feet. c.

From the yearbook receipts the students council deposited apart of the $1200 in a saving account receiving 9% interest per annum, and the rest in a chequing account receiving 4% per annum.